Main article: Mohsen Mehralizadeh in the presidential election of Iran (1400) Mehr Alizadeh registered during the presidential election campaign of 2004, and his qualification was not confirmed, but the Guardian Council approved him after the letter of Seyyed Ali Khamenei, the leader of Iran, who requested a review of his and Mustafa Moeen’s qualifications. The reformists entered the field with three options. Mehdi Karroubi from the Clergy Assembly, Mostafa Moin from the progressive reformists, and Mohsen Mehr Alizadeh entered the field as independent reformers.